Updated: March 2026
Commercial rate guide for Piedmont — Natural gas distribution in North Carolina (Charlotte, Raleigh), South Carolina (Greenville, Spartanburg), and Tennessee (Nashville). A Duke Energy subsidiary serving approximately 1.1 million customers.
General commercial service with customer charge and volumetric rate per therm. Large volume commercial service with declining block rates. Cost of gas adjustment applied monthly.
Rising
3.7% rate increase in North Carolina effective November 2025; 4.1% in Tennessee
3.7% rate increase in North Carolina effective November 2025; 4.1% in Tennessee effective January 2026
Property managers with Piedmont accounts frequently encounter these billing challenges:
Cost of gas adjustment causing winter bill spikes
Integrity management rider charges as new line items
Different rate structures across three state jurisdictions
Billing period variations causing inconsistent monthly comparisons
The utility is the sole provider in this service territory.
Natural gas distribution is regulated in all Piedmont Natural Gas service territories. Piedmont is a subsidiary of Duke Energy.
Integrity management rider filing pending before NC Utilities Commission for pipeline safety investments
Automate bill processing, catch billing errors, and track rate changes for all your Piedmont accounts in one platform.
Request a Demo →